TY - BOOK AU - Harwit, Martin Otto TI - Astrophysical concepts SN - 0471358207 KW - 027815013 KW - Astrophysique KW - rameau KW - Astrophysics KW - lc KW - 523.01 KW - QB461 KW - .H37 N2 - Bibliogr. p. 533-548. Index ER -